From: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: David Miller <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
Cc: pablo-Cap9r6Oaw4JrovVCs/uTlw@public.gmane.org,
kaber-dcUjhNyLwpNeoWH0uzbU5w@public.gmane.org,
kadlec-K40Dz/62t/MgiyqX0sVFJYdd74u8MsAO@public.gmane.org,
lizefan-hv44wF8Li93QT0dZR+AlfA@public.gmane.org,
hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org,
netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
netfilter-devel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
coreteam-Cap9r6Oaw4JrovVCs/uTlw@public.gmane.org,
cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
kernel-team-b10kYP2dOMg@public.gmane.org,
daniel-FeC+5ew28dpmcu3hnIyYJQ@public.gmane.org,
daniel.wagner-98C5kh4wR6ohFhg+JK9F0w@public.gmane.org,
nhorman-2XuSBdqkA4R54TAoqtyWWQ@public.gmane.org
Subject: Re: [PATCH 4/5] sock, cgroup: add sock->sk_cgroup
Date: Tue, 17 Nov 2015 16:31:26 -0500 [thread overview]
Message-ID: <20151117213126.GH22864@mtj.duckdns.org> (raw)
In-Reply-To: <20151117.162554.314531574043190960.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
Hello, David.
On Tue, Nov 17, 2015 at 04:25:54PM -0500, David Miller wrote:
> > In preparation, this patch adds sock->sk_cgroup which points to the
> > associated cgroup. A sock is associated on creation and stays
> > associated to the same cgroup until freed; unfortunately, this ends up
> > adding another cgroup field to struct sock on top of sk_cgrp_prioidx
> > and sk_classid. I tried to think of a way to somehow overload the
> > existing fields but couldn't come up with a reasonable one.
>
> sk->sk_cgrp_prioidx is simply sk->sk_cgroup->id, is it not?
Unfortunately, sk->sk_cgrp_prioidx is an arbitrary value which can be
configured through "net_cls.classid". :(
> We really need to consolidate this before we stuff even more members
> into the socket for control group support, sorry.
Yeah, it is messy. I'll see if I can come up with a non-crazy way to
combine the other two fields with ->sk_cgroup.
Thanks.
--
tejun
WARNING: multiple messages have this Message-ID (diff)
From: Tejun Heo <tj@kernel.org>
To: David Miller <davem@davemloft.net>
Cc: pablo@netfilter.org, kaber@trash.net, kadlec@blackhole.kfki.hu,
lizefan@huawei.com, hannes@cmpxchg.org, netdev@vger.kernel.org,
netfilter-devel@vger.kernel.org, coreteam@netfilter.org,
cgroups@vger.kernel.org, linux-kernel@vger.kernel.org,
kernel-team@fb.com, daniel@iogearbox.net,
daniel.wagner@bmw-carit.de, nhorman@tuxdriver.com
Subject: Re: [PATCH 4/5] sock, cgroup: add sock->sk_cgroup
Date: Tue, 17 Nov 2015 16:31:26 -0500 [thread overview]
Message-ID: <20151117213126.GH22864@mtj.duckdns.org> (raw)
In-Reply-To: <20151117.162554.314531574043190960.davem@davemloft.net>
Hello, David.
On Tue, Nov 17, 2015 at 04:25:54PM -0500, David Miller wrote:
> > In preparation, this patch adds sock->sk_cgroup which points to the
> > associated cgroup. A sock is associated on creation and stays
> > associated to the same cgroup until freed; unfortunately, this ends up
> > adding another cgroup field to struct sock on top of sk_cgrp_prioidx
> > and sk_classid. I tried to think of a way to somehow overload the
> > existing fields but couldn't come up with a reasonable one.
>
> sk->sk_cgrp_prioidx is simply sk->sk_cgroup->id, is it not?
Unfortunately, sk->sk_cgrp_prioidx is an arbitrary value which can be
configured through "net_cls.classid". :(
> We really need to consolidate this before we stuff even more members
> into the socket for control group support, sorry.
Yeah, it is messy. I'll see if I can come up with a non-crazy way to
combine the other two fields with ->sk_cgroup.
Thanks.
--
tejun
next prev parent reply other threads:[~2015-11-17 21:31 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-17 19:40 [PATCHSET] netfilter, cgroup: implement xt_cgroup2 match Tejun Heo
2015-11-17 19:40 ` [PATCH 1/5] cgroup: record ancestor IDs and reimplement cgroup_is_descendant() using it Tejun Heo
2015-11-17 22:54 ` Jan Engelhardt
2015-11-17 23:03 ` Tejun Heo
2015-11-17 19:40 ` [PATCH 2/5] kernfs: implement kernfs_walk_and_get() Tejun Heo
2015-11-17 21:20 ` David Miller
2015-11-17 21:22 ` Tejun Heo
[not found] ` <20151117.162040.1412296298973879057.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2015-11-17 22:48 ` Jan Engelhardt
2015-11-17 22:48 ` Jan Engelhardt
[not found] ` <1447789240-29394-1-git-send-email-tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2015-11-17 19:40 ` [PATCH 3/5] cgroup: implement cgroup_get_from_path() and expose cgroup_put() Tejun Heo
2015-11-17 19:40 ` Tejun Heo
2015-11-17 19:40 ` [PATCH 4/5] sock, cgroup: add sock->sk_cgroup Tejun Heo
[not found] ` <1447789240-29394-5-git-send-email-tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2015-11-17 21:25 ` David Miller
2015-11-17 21:25 ` David Miller
[not found] ` <20151117.162554.314531574043190960.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2015-11-17 21:31 ` Tejun Heo [this message]
2015-11-17 21:31 ` Tejun Heo
[not found] ` <20151117213126.GH22864-qYNAdHglDFBN0TnZuCh8vA@public.gmane.org>
2015-11-17 21:46 ` David Miller
2015-11-17 21:46 ` David Miller
2015-11-17 21:48 ` Daniel Borkmann
2015-11-17 21:48 ` Daniel Borkmann
2015-11-17 22:17 ` Tejun Heo
2015-11-17 21:46 ` Daniel Borkmann
[not found] ` <564BA036.4000602-FeC+5ew28dpmcu3hnIyYJQ@public.gmane.org>
2015-11-17 22:21 ` Tejun Heo
2015-11-17 22:21 ` Tejun Heo
2015-11-17 19:40 ` [PATCH 5/5] netfilter: implement xt_cgroup2 match Tejun Heo
[not found] ` <1447789240-29394-6-git-send-email-tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2015-11-17 22:56 ` Jan Engelhardt
2015-11-17 22:56 ` Jan Engelhardt
2015-11-17 22:56 ` Jan Engelhardt
2015-11-17 19:42 ` [PATCH iptables] libxt_cgroup2: add support for cgroup2 path matching Tejun Heo
2015-11-17 23:02 ` Jan Engelhardt
[not found] ` <alpine.LSU.2.20.1511172356570.13966-Og55a6x16tXH9RFtKMg/Ng@public.gmane.org>
2015-11-17 23:09 ` Tejun Heo
2015-11-17 23:09 ` Tejun Heo
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